CN111364635B - Multi-disaster and multi-performance target-oriented multi-yield-point metal shear damper - Google Patents
Multi-disaster and multi-performance target-oriented multi-yield-point metal shear damper Download PDFInfo
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- CN111364635B CN111364635B CN202010193318.1A CN202010193318A CN111364635B CN 111364635 B CN111364635 B CN 111364635B CN 202010193318 A CN202010193318 A CN 202010193318A CN 111364635 B CN111364635 B CN 111364635B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
Abstract
The invention relates to the technical field of buildings, in particular to a multi-yield-point metal shear damper facing multiple disasters and multiple performance targets, which comprises a first energy consumption piece and a second energy consumption piece, wherein the first energy consumption piece is sleeved outside the second energy consumption piece, a fixing piece and a stop component are arranged between the first energy consumption piece and the second energy consumption piece, the first energy consumption piece and the second energy consumption piece are fixedly connected through the fixing piece, the stop component comprises a first stop block and a second stop block matched with the first stop block, the first stop block is connected with one of the first energy consumption piece and the second energy consumption piece, the second stop block is connected with the other, and the second stop block is used for contacting with the first stop block and pushing the first stop block to move along the shearing force direction. When the structure encounters disasters of different types and different levels, the multi-stage energy dissipation and shock absorption device can provide multi-stage energy dissipation and shock absorption capacity according to the deformation state of the structure, meets the multi-performance target requirement of the building structure under multiple disasters, improves the anti-seismic performance of the structure, and is suitable for the rigidity, the bearing capacity and the energy consumption capacity of the structure requirement.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a multi-yield-point metal shear damper for multi-disaster and multi-performance targets.
Background
Metal shear dampers are a form of damper that is common in shock absorbing structures. The working principle of the metal shear damper in the prior art is that mild steel is used as a shear energy dissipation plate, and the damper enters yielding earlier than a main body structure under the action of an earthquake by utilizing the characteristics of low yield strength and good ductility, so that the effect of dissipating earthquake energy can be achieved by utilizing the accumulated plastic deformation of the mild steel after yielding.
The building structure has the design requirements of multiple performance targets under different disaster levels under the coupling action of multiple loads such as wind load, earthquake load and the like, so that the damper in the damping structure is required to provide multistage rigidity, bearing capacity and energy consumption capacity suitable for the multiple performance targets under multiple disasters. However, the prior art metal shear dampers have a relatively high stiffness before yielding and a significantly reduced stiffness after yielding. The multi-performance target requirements of the building structure under multiple disasters cannot be met.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problems that the rigidity of the existing shear damper is higher before yielding, and the rigidity is obviously reduced after yielding. The requirement of multiple performance targets of the building structure under multiple disasters cannot be met.
(II) technical scheme
In order to solve the technical problems, the invention provides a multi-yield-point metal shear damper facing multiple disasters and multiple performance targets, which comprises a first energy consumption piece and a second energy consumption piece, wherein the first energy consumption piece is sleeved outside the second energy consumption piece, a fixing piece and a stop component are arranged between the first energy consumption piece and the second energy consumption piece, the first energy consumption piece and the second energy consumption piece are fixedly connected through the fixing piece, the stop component comprises a first stop block and a second stop block matched with the first stop block, the first stop block is connected with one of the first energy consumption piece and the second energy consumption piece, the second stop block is connected with the other, and the second stop block is used for contacting with the first stop block and pushing the first stop block to move in a shear force direction.
The first energy dissipation part and the second energy dissipation part are annular parts, the two annular parts are arranged in parallel, each annular part comprises two straight sections and two arc sections, the two straight sections are arranged oppositely, and two ends of one straight section are connected with two ends of the other straight section through the two arc sections arranged oppositely to form the annular part.
The fixing piece and the stop component are respectively arranged in two parallel spaces formed by the straight section of the first energy dissipation piece and the straight section of the second energy dissipation piece.
The fixing piece is arranged opposite to the stop component.
The outer surfaces of the two straight sections of the first energy dissipation part are respectively provided with a first connecting piece and a second connecting piece.
The first connecting piece and the stop component are arranged correspondingly, and the second connecting piece and the fixing piece are arranged correspondingly.
The yield strength of the fixing piece, the stop component, the first connecting piece and the second connecting piece is greater than that of the first energy dissipation piece and the second energy dissipation piece.
The first stop block is provided with a groove, the second stop block is embedded into the groove, and a gap is reserved between the second stop block and the inner portion of the groove.
The first stop blocks are two, the two first stop blocks are respectively positioned on two sides of the second stop block along the shearing force direction, and a gap is formed between the second stop block and the first stop blocks.
The first stop block is arranged on the inner surface of the first energy dissipation part, and the second stop block is arranged on the outer surface of the second energy dissipation part.
(III) advantageous effects
The technical scheme of the invention has the following advantages: according to the multi-disaster and multi-performance target-oriented multi-yield-point metal shear damper, the second energy consumption piece is located on the inner side of the first energy consumption piece to form an inner and outer sleeved structure, the second energy consumption piece and the first energy consumption piece are connected through the fixing piece located between the outer surface of the second energy consumption piece and the inner surface of the first energy consumption piece in a welding mode, the stop assembly is further arranged between the outer surface of the second energy consumption piece and the inner surface of the first energy consumption piece, the first stop block and the second stop block can be selectively arranged on the first energy consumption piece and the second energy consumption piece in a matched mode according to actual needs, and when the first energy consumption piece and the second energy consumption piece move relatively to form shearing force, the second stop block can be in contact with the first stop block and can push the first stop block to move along the direction of. When the damper is installed and used in the damping structure, the outer surface of the lower part of the first energy consumption piece is connected with the damper buttress in the floor of the main body structure, and the outer surface of the upper part of the first energy consumption piece is connected with the bottom of the frame beam on the upper layer of the structure. When the main structure generates the horizontal displacement between floors under the action of various loads, the horizontal displacement between the upper part of the first energy consumption piece and the lower part of the first energy consumption piece is the same as the horizontal displacement of the floors at the positions of the shear dampers, the shear dampers can work together with the main structure to provide rigidity and bearing capacity for the main structure, and the seismic energy can be dissipated through the yield deformation of the first energy consumption piece and the second energy consumption piece. Therefore, when the structure encounters disasters of different types and different levels, the multi-stage energy dissipation and shock absorption device can provide multi-stage energy dissipation and shock absorption capacity according to the deformation state of the structure, meet the multi-performance target requirement of the building structure under multiple disasters, improve the anti-seismic performance of the structure, and adapt to the rigidity, the bearing capacity and the energy consumption capacity of the structural requirement.
In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions and the advantages brought by the technical features of the technical solutions described above, other technical features of the present invention and the advantages brought by the technical features of the technical solutions will be further explained with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a multi-yield point metal shear damper for multi-disaster and multi-performance objectives according to an embodiment of the present invention.
1: a first energy dissipating component; 2: a second energy dissipating component; 3: a fixing member; 4: a stop assembly; 41: a first stopper; 42: a second stopper; 43: a groove; 5: a first connecting member; 6: a second connecting member.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present invention, unless otherwise specified, "plurality", "plural groups" means two or more, and "several", "several groups" means one or more.
As shown in fig. 1, the multi-yield-point metal shear damper facing multiple disasters and multiple performance targets according to the embodiment of the present invention includes a first energy consuming part 1 and a second energy consuming part 2, the first energy consuming part 1 is sleeved outside the second energy consuming part 2, a fixing member 3 and a stop assembly 4 are disposed between the first energy consuming part 1 and the second energy consuming part 2, the first energy consuming part 1 and the second energy consuming part 2 are fixedly connected by the fixing member 3, the stop assembly 4 includes a first stop 41 and a second stop 42 engaged with the first stop 41, the first stop 41 is connected to one of the first energy consuming part 1 and the second energy consuming part 2, the second stop 42 is connected to the other, and the second stop 42 is configured to contact the first stop 41 and push the first stop 41 to move in a shear direction.
According to the multi-yield-point metal shear damper facing to multiple disasters and multiple performance targets, the second energy consumption piece 2 is located on the inner side of the first energy consumption piece 1 to form an inner and outer sleeved structure, the second energy consumption piece 2 and the first energy consumption piece 1 are connected through the fixing piece 3 located between the outer surface of the second energy consumption piece 2 and the inner surface of the first energy consumption piece 1 in a welding mode, the stop component 4 is further arranged between the outer surface of the second energy consumption piece 2 and the inner surface of the first energy consumption piece 1, the first stop block 41 and the second stop block 42 can be selectively arranged on the first energy consumption piece 1 and the second energy consumption piece 2 in a matched mode according to actual needs, and when the first energy consumption piece 1 and the second energy consumption piece 2 move relatively to form shear force, the second stop block 42 can be in contact with the first stop block 41 and can push the first stop block 41 to move along the shear.
When the damping structure is installed and used, the outer surface of the lower part of the first energy consumption piece 1 is connected with a damper buttress in a floor of the main body structure, and the outer surface of the upper part of the first energy consumption piece 1 is connected with the bottom of a frame beam on the upper layer of the structure. When the main structure generates horizontal displacement between floors under the action of various loads, the horizontal displacement between the upper part of the first energy consumption piece 1 and the lower part of the first energy consumption piece 1 is the same as the horizontal displacement of the floors at the positions of the shear dampers, the shear dampers can work together with the main structure to provide rigidity and bearing capacity for the main structure, and the seismic energy can be dissipated through the yield deformation of the first energy consumption piece 1 and the second energy consumption piece 2. Therefore, when the structure encounters disasters of different types and different levels, the multi-stage energy dissipation and shock absorption device can provide multi-stage energy dissipation and shock absorption capacity according to the deformation state of the structure, meet the multi-performance target requirement of the building structure under multiple disasters, improve the anti-seismic performance of the structure, and adapt to the rigidity, the bearing capacity and the energy consumption capacity of the structural requirement.
Performance target 1: under the action of a small earthquake to a medium earthquake or a wind load in 50 years, the deformation between structural layers is smaller, at the moment, the upper part of the first energy consumption part 1 of the shear damper disclosed by the invention horizontally displaces (as shown by an arrow in fig. 1), and enters a first working stage, because a gap is reserved between the first stop block 41 and the second stop block 42, the second stop block 42 can move within the range limited by the first stop block 41 under the condition that the first stop block 41 is kept static, and at the working stage, the second energy consumption part 2 is in a static state, and the performance parameters of the shear damper are provided by the first energy consumption part 1.
Performance target 2: under the action of a major earthquake or an earthquake or under the action of a wind load in 100 years, the deformation between the structural layers is increased, at the moment, the first energy consumption piece 1 of the shear damper further generates larger horizontal displacement (as shown by an arrow in fig. 1), the second stop block 42 is contacted with the first stop block 41, the first stop block 41 stops the second stop block 42, and along with the continuous increase of the horizontal displacement, the second stop block 42 pushes the first stop block 41, so that the second energy consumption piece 2 is driven to horizontally deform to enter a second working stage. Under the working stage, the performance parameters of the shear damper are provided by the first energy consumption piece 1 and the second energy consumption piece 2 together, and the rigidity, the bearing capacity and the energy consumption capacity are all larger than those in the first working stage, so that the lateral rigidity of the structure is improved, a weak layer is avoided, and the deformation and the damage of the structure under the disasters are further reduced.
The multi-disaster and multi-performance target-oriented multi-yield-point metal shear damper disclosed by the embodiment of the invention can be used for realizing the beneficial effect of uniformly controlling the displacement angle of each floor when being used for energy dissipation and shock absorption of a frame structure. Under the action of earthquake, the bottom layer of the traditional frame structure and the damping frame structure can firstly form a weak layer (namely the relative displacement between the floors is far larger than that of other floors), and the earthquake-resistant safety of the structure is seriously influenced. With the damping frame structure adopting the shear dampers of the embodiment of the invention, when a weak layer is to be formed under the action of an earthquake, the shear dampers in the lower floor can firstly enter the second working stage, the shear dampers in the rest of the upper floors are still in the first working stage, the rigidity of the lower floor is higher than that of the rest of the floors, so that the floor is not a weak layer any more, the interlayer displacement of the floor is accelerated and slowed down, the interlayer displacement of the rest of the upper floors is continuously increased, the shear dampers in the floors continuously consume energy in the first working stage, and the interlayer displacement of each floor is relatively uniform. Along with the continuous increase of displacement, the attenuator of each floor all gets into the second working phase, improves the whole power consumption of structure on the one hand, controls the biggest damage of structure, and on the other hand, the steerable each floor of make full use of each floor attenuator is damaged, is showing the antidetonation security that has promoted the structure.
The following description is made of the embodiments of the present invention for the specific structure of the multi-yield-point metal shear damper for multi-disaster and multi-performance targets:
(1) in one embodiment, the first energy dissipation member 1 and the second energy dissipation member 2 are both annular members, and the two annular members are arranged in parallel with each other, each annular member includes two straight sections and two arc sections, the two straight sections are arranged oppositely, and two ends of one straight section are connected with two ends of the other straight section respectively through the two arc sections arranged oppositely to form an annular member.
In this embodiment, for adapting to the requirement of energy consumption of deformation, when the main structure produces horizontal displacement from top to bottom, first energy consumption spare 1 and second energy consumption spare 2 warp more stably, and is not fragile, and first energy consumption spare 1 and second energy consumption spare 2 are the loop forming element of track shape, and every loop forming element contains two straight sections that are parallel from top to bottom and two semicircular arc sections of bilateral symmetry. In order to realize the inside and outside nested structure of the second energy consumption piece 2 and the first energy consumption piece 1, the diameter and the length of the straight section of the semicircular arc section of the second energy consumption piece 2 are both smaller than those of the semicircular arc section of the first energy consumption piece 1. In this embodiment, the first energy dissipation member 1 and the second energy dissipation member 2 may be formed by welding after cold-bending steel plates.
In other embodiments, the first dissipative member 1 and the second dissipative member 2 may be in the form of other annular members, or the first dissipative member 1 is an annular structural member and the second dissipative member 2 is a solid structure with a certain yield strength deformability. In order to adapt to the specific structure of the external damping structure, the two straight sections of each annular part can be arranged oppositely but not parallelly, namely, a structural form with a certain inclination angle is formed, the two arc sections are arranged oppositely but asymmetrically, and the two ends of the two straight sections are connected through the arc sections.
(2) In one embodiment, the fixing member 3 and the stopping member 4 are respectively disposed in two parallel spaces formed by the straight section of the first dissipative member 1 and the straight section of the second dissipative member 2.
In this embodiment, the stopping component 4 is disposed between the straight section above the first energy dissipation member 1 and the straight section above the second energy dissipation member 2, and the fixing component 3 is disposed between the straight section below the first energy dissipation member 1 and the straight section below the second energy dissipation member 2. In other embodiments, the fixing member 3 may be disposed between the straight section above the first dissipative member 1 and the straight section above the second dissipative member 2, and the stopping member 4 may be disposed between the straight section below the first dissipative member 1 and the straight section below the second dissipative member 2. The fixing piece 3 and the stop component 4 are arranged in the parallel space formed by the straight section, so that the stability of the shear damper structure is improved, meanwhile, the displacement between floors is transmitted to a greater degree, and the shock absorption and energy consumption effects are favorably improved.
(3) In one embodiment, the fixing member 3 is disposed opposite to the stopper member 4.
In this embodiment, the positions of the fixing member 3 and the stopping member 4 are opposite, and both the fixing member and the stopping member are located at the center of the straight section where the fixing member and the stopping member are located, so that the stress of the shear damper in the main body structure is balanced, and the deformation and energy consumption of the first energy consumption member 1 and the second energy consumption member 2 are better realized. In other embodiments, the fixing member 3 may be offset from the stopping member 4 by a certain distance, but it is necessary to ensure that the fixing member 3 and the stopping member 4 are respectively located in two parallel spaces formed by dividing the space between the first energy dissipating member 1 and the second energy dissipating member 2 in the direction of the shearing force.
(4) In one embodiment, the outer surfaces of the two straight sections of the first dissipative element 1 are provided with a first connection element 5 and a second connection element 6, respectively.
In this embodiment, the first connecting member 5 is welded to the outer surface of the straight section above the first energy dissipation member 1, and the second connecting member 6 is welded to the outer surface of the straight section below the first energy dissipation member 1. When the damping structure is installed and used, the second connecting piece 6 is connected with a damper buttress in a floor of the main body structure, and the first connecting piece 5 is connected with the bottom of the frame beam on the upper floor of the structure. When the main body structure generates horizontal displacement between floors under the action of various loads, the horizontal displacement between the first connecting piece 5 and the second connecting piece 6 is the same as the horizontal displacement of the floors at the positions of the shear dampers, the shear dampers can work together with the main body structure to provide rigidity and bearing capacity for the main body structure, and the earthquake energy is dissipated through the yield deformation of the first energy dissipation piece 1 and the second energy dissipation piece 2.
(5) In one embodiment, the first connecting member 5 is disposed corresponding to the stopping assembly 4, and the second connecting member 6 is disposed corresponding to the fixing member 3.
In this embodiment, the first connecting member 5, the stopping assembly 4, the fixing member 3, and the second connecting member 6 are disposed opposite to each other on a straight line, and since the first energy consuming member 1 has a certain deformation capability, in order to ensure that the shearing force can be directly transmitted to the position of the first connecting member 5 where the stopping assembly 4 is located while the main body structure moves, the first connecting member 5 is disposed opposite to the side surface of the straight section of the first energy consuming member 1 where the stopping assembly 4 is located and opposite to each other, and acts on the stopping assembly 4 to move part of the stopping assembly 4 located on the first connecting member 5. Similarly, the second connecting member 6 is disposed on the opposite side of the straight section side of the first energy dissipating member 1 where the fixing member 3 is located and opposite to the straight section side.
(6) In one embodiment, the yield strength of the fixing member 3, the stopping member 4, the first connecting member 5 and the second connecting member 6 is greater than the yield strength of the first dissipative member 1 and the second dissipative member 2.
In this embodiment, the first energy dissipation component 1 and the second energy dissipation component 2 are made of steel materials, and the grade of the steel materials can be selected according to the performance requirements of the shear damper, such as Q235, LY110, and the like. The stop assembly 4, the fixing member 3, the first connecting member 5 and the second connecting member 6 are all made of steel, and the yield strength is greater than that of the steel used for the first energy dissipation member 1 and the second energy dissipation member 2. The multi-yield characteristic can fully utilize each layer of shear damper to control the damage of each layer, and the anti-seismic safety of the structure is obviously improved.
In other embodiments, the components of the shear damper may be made of other metal materials, so as to ensure that the yield strength of the stop assembly 4, the fixing member 3, the first connecting member 5 and the second connecting member 6 is greater than the yield strength of the first dissipative member 1 and the second dissipative member 2. The soft steel is used as the energy dissipation plate, and the shear damper is subjected to yielding earlier than the main body structure under the action of an earthquake by utilizing the characteristics of low yield strength and good ductility, so that the effect of dissipating the earthquake energy can be achieved by utilizing the accumulated plastic deformation of the soft steel after yielding.
(7) In one embodiment, the first block 41 is formed with a groove 43, and the second block 42 is embedded in the groove 43 with a gap from the inside of the groove 43.
In this embodiment, a groove 43 is formed in a horizontal surface of the first stopper 41, the cross section in the vertical direction is in a concave shape, the second stopper 42 is in a cube and is embedded in the groove 43 of the first stopper 41, and a gap is formed between a side wall of the second stopper 42 and a groove wall of the groove 43 in the shearing force direction, when the first energy consumption member 1 moves relative to the second energy consumption member 2, the second stopper 42 moves in the groove 43, the first stopper 41 plays a role of limiting and stopping the movement of the second stopper 42, so as to perform the first energy consumption stage, and after a stopping acting force is generated, the second stopper 42 can push the first stopper 41 to move, so as to drive the second energy consumption member 2 to move and enter the second energy consumption stage.
(8) In one embodiment, the first block 41 is two, the two first blocks 41 are respectively located on two sides of the second block 42 along the shearing force direction, and a gap is formed between the second block 42 and the first block 41.
In this embodiment, the first stoppers 41 may be two independent stoppers respectively located on two sides of the second stopper 42 along the shearing direction, and a gap is left between the sidewall of the second stopper 42 and the groove wall of the groove 43 in the shearing direction, when the first energy consuming part 1 moves relative to the second energy consuming part 2, the second stopper 42 moves in the groove 43, the first stopper 41 plays a role of limiting the stopper on the movement of the second stopper 42, and performs the first energy consuming stage, and after the stopping action force is generated, the second stopper 42 can push the first stopper 41 to move, thereby driving the second energy consuming part 2 to move, and entering the second energy consuming stage.
(9) In one embodiment, the first stop 41 is disposed on an inner surface of the first dissipative element 1 and the second stop 42 is disposed on an outer surface of the second dissipative element 2.
In this embodiment, the first stop 41 is welded to the inner surface of the flat plate above the first energy dissipation member 1, and the second stop 42 is welded to the outer surface of the flat plate above the second energy dissipation member 2. In other embodiments, the first stop 41 is welded to the outer surface of the flat plate above the second energy dissipating member 2, and the second stop 42 is welded to the inner surface of the flat plate above the first energy dissipating member 1. Alternatively, the first stopper 41 is welded to the inner surface of the flat plate below the first energy dissipating member 1, and the second stopper 42 is welded to the outer surface of the flat plate below the second energy dissipating member 2. Alternatively, the first stop 41 is welded to the outer surface of the flat plate above the second energy dissipation member 2, and the second stop 42 is welded to the inner surface of the flat plate above the first energy dissipation member 1.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A multi-disaster and multi-performance target-oriented multi-yield-point metal shear damper is characterized in that: the energy-consuming device comprises a first energy-consuming part and a second energy-consuming part, wherein the first energy-consuming part is sleeved outside the second energy-consuming part, a fixing part and a stop component are arranged between the first energy-consuming part and the second energy-consuming part, the first energy-consuming part and the second energy-consuming part are fixedly connected through the fixing part, the stop component comprises a first stop block and a second stop block matched with the first stop block, the first stop block is connected with one of the first energy-consuming part and the second energy-consuming part, the second stop block is connected with the other one of the first energy-consuming part and the second energy-consuming part, and the second stop block is used for contacting with the first stop block and pushing the first stop block to move along the direction of shearing force;
the first energy dissipation part and the second energy dissipation part are annular parts, the two annular parts are arranged in parallel, each annular part comprises two straight sections and two arc sections, the two straight sections are oppositely arranged, and two ends of one straight section are respectively connected with two ends of the other straight section through the two arc sections which are oppositely arranged to form the annular part;
a groove is formed in the first stop block, the second stop block is embedded into the groove, and a gap is reserved between the side wall of the second stop block and the groove wall of the groove in the shearing force direction.
2. The multi-disaster and multi-performance goal oriented multi-yield point metal shear damper of claim 1, wherein: the fixing piece and the stopping component are respectively arranged in two parallel spaces formed by the straight section of the first energy dissipation piece and the straight section of the second energy dissipation piece.
3. The multi-disaster and multi-performance goal oriented multi-yield point metal shear damper of claim 2, wherein: the fixing piece is opposite to the stop component.
4. The multi-disaster and multi-performance target oriented multi-yield point metal shear damper of claim 3, wherein: and the outer surfaces of the two straight sections of the first energy consumption part are respectively provided with a first connecting piece and a second connecting piece.
5. The multi-disaster and multi-performance target oriented multi-yield point metal shear damper of claim 4, wherein: the first connecting piece and the stopping component are arranged correspondingly, and the second connecting piece and the fixing piece are arranged correspondingly.
6. The multi-disaster and multi-performance target oriented multi-yield point metal shear damper of claim 5, wherein: the yield strength of the fixing piece, the stop component, the first connecting piece and the second connecting piece is greater than that of the first energy dissipation piece and the second energy dissipation piece.
7. The multi-disaster and multi-performance goal oriented multi-yield point metal shear damper of any of claims 1 to 5, wherein: the first stop block is arranged on the inner surface of the first energy dissipation part, and the second stop block is arranged on the outer surface of the second energy dissipation part.
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| CN111945916A (en) * | 2020-07-20 | 2020-11-17 | 北京工业大学 | Nested U-shaped damper with waveform energy dissipation part |
| CN111945915A (en) * | 2020-07-20 | 2020-11-17 | 北京工业大学 | Nested U-shaped staged yield damper |
| CN112112302A (en) * | 2020-07-20 | 2020-12-22 | 北京工业大学 | Asymmetric U-shaped steel plate damper with waveform holes |
| CN112211313B (en) * | 2020-09-29 | 2021-12-31 | 北京工业大学 | Spatial three-dimensional deformation shock absorber capable of achieving energy consumption in grading manner |
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